Diablo 3 Language Selection

Hey, just have a quick question. Will I be able to select which language I would want the game to appear in (ie: dialogue)? Just curious cause I also know a few other languages (which are all supported by the game as per the pre-order page) and I would like to also play them in those languages as well. Or will I have to buy a foreign copy of the game for it to be in that language?